Which of the following tables represents a function that is proportional???

Function 1:

x y
1 2
2 4
3 6
Function 2:

x y
1 2
2 3
3 4(1 point)

Function 1 is the table that represents a proportional function. This is because y is always 2 times the value of x in Function 1. This shows a constant rate of change, indicating proportionality.